Transmission mechanism for motor-cycles.



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STATES PATENT OFFICE.

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meenten rei. e, 1910.

..1 mmmauanuiaiaea minnares.

1b dleehm it my conca-n:

E. is hmm im 1.1mm s. einem, a eitilm of the United States, residing atLe'hwood in the county of Cuyahoga and s State fof hio, have invented acertain new and useful Im t in iaeion llechaniam for otoncyclea,

of which the following ie a full, clear, and exact descripit couimt iato lag, of comparatively little eo that may be adapted for its 80poaitionouthacyelgandtoaoanembie the ro podtlon when aaaanbladandahallgeliieix: clmd in a duet proof casing, whereby they are rotocteddu their o tion. 8l above andrdtnber obiectapixt'fwill be ac enReferring to Fig. 1

aninmaaawhol iaau rtedu na xed part A of the fijame nipaiiner mounted uit will be acen that thea tstfibly adjustable thereon. From this bandthat the sprocket wheel B of the engine shaft is in vertical alinementwith the Alai-ge rprooket wheel C of the transiniesioii device.

liisla s rocket wheel is held on a drum com o two members C' C suitablyeecured t ther b ineens of cap screws and is rotate ly rgi therewith byreaeon of in-v wardly rejecting forks C which strnddle the shim of thescrews used for securing the two members of the drum together. Journnlcd.ou etude inside the drinn nre compound pinions C C', of which I haveshown three rete, one of anid piniouii C meshing with a gear D on thehuh D' of n friction plate 1?', the other and small inion C meshing witha gear E rigid wit the trnnemission sprocket E', in auch cases ns thoecshown in Fig. 1 where the mechanism is mounted at the crank of theframe, but rigid with the hub F where the mechanism is mounted upon thedriving wheel as in Fim 5. Ae shown, thedrumia mount/ed ipon t hub ofthe last mentioned gear E an is free to rotate relatively thereto. Theraid gear E is itself bell b."in E which are held thereto byany suitab emeans. In the present instance, I have shown such means aa comprisin acone raceway G upon a fixed sleeve which has cani slots G there in,ahownin Fig. 8 for a urpoee hereinafter described. A .iiin me H is und uponthe xed sleeve in such manner aa to be rotatable relative thereto withincertain limite set by said slots G and studs H fixed to the slidingsleeve and titled -within s'aid slots. The said sliding sleeve hascarried on ite periphery racewa H* for balllbearin which sitigport theiub D of the gear rigid wi the friction late D above mentioned. Saidfriction p ate has a peripheral face D* ada ted forv engagement withabrake band tween its"inner face and the outer face of the drum aliirality of ordinary friction ringe L, the a ternate members of thesefriction rin being aurported by thegfriction plate an mova le tierewith. Any suitable arran ment of friction rings may uacd this' etai]forming no material feature of m invention in itaelf.

e alidi 'aleeve li has at its outer end a face plate H whichincloeee andprotectethe parte just described, and har on its peri liery groove H towhich is tted n band ro described below. and has beu rin project: an armM to which thc operating 'over )1* ia attached. Un this arin itl' alsoni pivoted a short wicking lever li', ilie apper end of which has aliiik connection li a, with a Ikedtpart l of the frame, so that themovement o the operating lever will cause rocking lever to move in onedirection or the other according to the motion of said operating leverM".

1 The brake band Keinen-cles the n-i-iplicry of the friction platedescribed, and ies under an overhangin and retaining tlange M. of

the band M, w ich flange terminates at each aide of the arm M' to whichthe operating u lever is llecnred. One end of the brake band anoutwardly extending projection K,

Il een in Fi 4, which projection takes lllinat the endg of theoverhanging ilange M3 on laid band M, while the other end of the brakeband is provided with a-secnred pro- K carryinia suitable lag K pro-Jectmg Into a fork at the end of the rockin lever, ro iis to lieinovalile with .said lever. l

eferrnig to Figs. l and il, particularly, it

will be Been that by movement of the operating lever M in one direction.the pins l on the sliding sleeve H, coi'iperatin f with the lote G* inthe fixed sleeve (i will canse the laid Sliding sleeve to move inwardcarrying..r

30 with i, on the ball bearings supported thereby, the friction plateI)2 so as to clanip the Vfriction ri L between said plaleand the face ofthe rum, tliu's locking! the. plate and drum together notar as rotativemovement u ia'co'ncrned. 'The gear I) rigid with said friction plate, itwill be noted.` is of saliti-lent width to permit thin movement to takeplace `and-at. the saine time maintain a .onstaat engagement with itsnies-hing mate (71 of the compound tlrnm. A movement from this cxtremeposition of the o rating lever toward the other direction willepermitthe friction rings li to become loose. i further continued more ment. ofthe operating lever in tho saine direction will cani-ie the oscillatinglever. one end of which in connected by a link with the frame, to throwthe free end of the friet ion band down onto the peri iheral face oftlic friction plate 'and thus loc the saine against any rotationwhatever. When the operating lever is thrown to that extreme position atwhich the sliding vdial( is drawn inwardly carrying the friction plateand tlie friction overV a inst the drum so as to lock aait plate ain itsrigid gear against rotative movement relative to the drinn, it will beolivioua that the compound pinions 'carried in ,the drum will not rotateupon their beareo inge, but will remain relatively rigid within thedrinn and thun ti'nnainill the lilith apeed of the drinn directly to thegear ll which ia rigid with tltn transmission apriwliot or. inl

the construction shown in l", r. 5. rigid with el the hubof the drivingwheel. At this spi pinion gear supported within thev 'ion carried bysaid whith is the high speed, there will be no reduction more than thatwhich is obtained, through the ditlcreiit sizes ot aprockets. ilien tlicoperating lever iii shifted to au intermediate position, auch that thefriction plate is moved away from the drinn and the friction ringsintermediate the saine are limseiiein'the drinn will race forwardcarryiin.r the pinions therein which willfreely rotatc-ovcr the gearrigid with the transniiiision sprocket. 'this wifi cause the r rigid nith the friction plate to rotate id y. when' the operating lever ismoved on to a second extreme position, the brake hand will be throwndown by the oscillating lever so aa to ao clainp the peri )lieral faceof the friction plate and hold t e latter against all'rotativemovi-nient. This will result in the compound piiiions which are carriedliv the drinn finding u resistance to rotation in the 86 Inear lixed tothe friction plate and rotate in a direction which will result in thespeed of the di-iiin heine; reduced in trananiisaion to tli'c gear E.

lt will thus be eeen that .I have rovided a 9o mechanism capable byreason of the character of its various parts of being applied to sach alocation as that of a motor cycle, where the thickness of the mechanismheconies ii mutter of great moment, and that I en Y pllaco all of themechanism under tha eolitrol of a single lever liv which both the highand ille low speeds ant the free movement ot' the enginelniay be had atIthe option of the rider. lt is further to be noted that this a iparatuais of such u character that it may lie applied to the frame o'f existingmachines without necessitating any material alteralioii in the saine.

Having tliua described my invention, I toa claim:

1. In transmission mechanism, a drain adapted to receive motion, acompound pindrinn, a `tranamiaeioii gear meshingr with one member ofsaid conipoand pinion, a second gear coaxial =with the trunsinisaiongear meshing with the other inenilier ot' said compound pinion, thissecond gear being rigidly connected aa to rotative movement with afriction plate? said friction platey boing movable towaiand from aposition in which .it ia locked rotatively with the drinn, andindependent locking means for holding said plate against rotation, ai.operating handle and connections between said operating handle and bottithe plate and said independent' locking means for movin said platetoward. and from the drum and or operating said independent lockiiimeins.

.l. ln tranamiaaion aieehaniiini, the combination of a rotatable )rearE, a tranamimion gear li' secured lo it,.a,tixturo, a sleeve H-iianinted and adapted to he tftirnetltt l aaid fixture, the tixtureand'sleeve having lao with the engine, a' compound pinion, mounted onsaid lel with the axis of tlie drum, the two parts respectively in meshllparts carried lt said drum and by the hist.'

.said sleeve causes it to move longitudinally.

mena

the one a spiral slot and the other a pin which projects into said slot,a gear D rotatabl mounted upon said sleeve and inctpeb e of endwisemovement relative thereto, an' independently rotatable drum, a drivinggear O secured to the periphery of said drum', a compound pinion:'.iounted in said drum on an axis eccentric to but paralof said pinionrs D an E, and friction parts rotatable with said drum and with the gearD and adapted to be brou ht into frictional contact by the turning anconsequent endwise movement of sleeve H.

8. In transmission mechanism, a drum' adapted to receive rotary motionfrom an drum on an axis eccentric to but parallel with its axis, a gearadapted to transmit motion in mesh with one part of sind pinion a aradapted to run idle and to mesh with tg:

other part of said pinion, friction' parts carried by said drum und bythe last named gear, and adapted to be broii ht into frictional contactbythe lon itudina inove ment of the latter, a conxiii rocking #leve onwhich said gear is rotatably mounted oy means which prevent relativelongitudinal movement, means by which the tui-ning of i 4. In.transmission mechanism, a drum adapted .to receive rotary" motionfiloni an las, a compound pinion mounted on sai rum on an axis eccentricto but parallel with its axis, a gear adapted to transmit motion in withone part of said pinion, a r adapted to run idle and to mesh with t ieother part of said pinion, friction parts carried by said drinn and bythe hist named gear and adapted to be hrou it into I frictional contactby the longitudna niovei ment of the latter, an axially concentric lrocking sleeve on which said gear is rotai tably mounted means whichprevent relal tive longitudine movement, means by which l t the turningof said sleeve causes it to move l longitudinally, and a leveradjuatably aocured to said sleeve for turning it.

l 5. In transmission mechanism, a drum adapted Ato receive rotaryiiioton from an engine, a compound pinion mounted on sind drain on anaxis eccentric to but parallel with its lixis, agear adapted to transmitmotion in mesh with one part of said pinion a earpdapted to run idle andto mesh with t elotherpart of. said `piniomlriction named gear anadapted to be baud connected with ,its inner end in msi tion to engageabriikesi'.rfa ce carrie by the gear l). and a link connecting the otherarm of said lever K with a fixture.

6. In transmission mechanism, the combination of a drum adapted toreceive'rotary motion from an en inc, a compound pinion rotatablysupport by said drum on an axis parallel with but eccentric to the axisof the drum, a gear engaging with one part of: said pinion and ada tedto transmit motion, a gear meshing with the other said pinion, a sleeveon which t e last namei gear is rotatably mounted by means whichprevent. its relative longitudinal movement, means whereby the turningof said sleeve compels it. to move longitudinally, a face plate ri idwith said sleeve, a band adjustably. camped to said face plate andcarrying an operating` lever.

In testimony whereof, I hereuntojailix my signature 'in the iresence oftwo witnesses.

ll [LIP S. BUSHNEQL.

'itnesses:

. E. B. Giwnms'r,

H. R. SULLIVAN.

art ofv sleeve for turning it, a lever K pivoted to the last namedlever, a brake`

